Home / 3,745.95-5,615.15-1,279.09

Finding the Fourth Proportional to 3,745.95, 5,615.15 and 1,279.09

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Solution

The fourth proportional to 3,745.95, 5,615.15 and 1,279.09 is: 1,917.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.95 : 5,615.15 = 1,279.09 : x
  2. Step 2: Convert to fraction form
    3,745.95/5,615.15 = 1,279.09/x
  3. Step 3: Cross multiply
    3,745.95x = 5,615.15 × 1,279.09
  4. Step 4: Simplify right side
    3,745.95x = 7,182,286.43
  5. Step 5: Solve for x
    x = 7,182,286.43/3,745.95
  6. Step 6: Final answer
    x = 1,917.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.